The problem I see is that we keep throwing away things that work well and are understood. Relational databases will work well for most products, its understood

The problem I see is that we keep throwing away things that work well and are understood. Relational databases will work well for most products, its understood how to design them well, optimize them, tune the servers. But nowadays we need to stick everything into microservices on a Kubernetes cluster with Mongo instead and we are told that this is progress.